Plate-glass-polishing apparatus



May 5, 1925. 1,536,917

w. OWEN PLATE GLASS POLISHING APPARATUS Filed June 5, 1925 2 Sheets-Sheet 1 INVENTOR Patented May 5, 1925.

UNITED STATES PATENT OFFICE.

WILLIAM OWEN, OF PITTSBURGH. PENNSYLVANIA, ASSIGNOR TO PITTSBURGH PLATE GLASS COMPANY, A CORPORATION OF PENNSYLVANIA.

PLATE-GLASS-POLISHING APPARATUS.

Application filed June 5,

T all whom it may concern:

Be it known that I, vlL-LIAM Owns, a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have made a new and useful invention in Improvements in Plate-Glass-Polishing Apparatus, of which the following is a specitication.

The invention relates to apparatus for polishing.plate glass. It is designed particularly for that type of apparatus in which the glass to be polished is carried beneath a series of polishers on cars or other carrier apparatus, but is not limited to use in such connection as it is of utility when used in connection with the ordinary polishing machine having a rotating polishing bed or table which carries the glass. After a certain period of use, the felt-s of the runners become caked with rouge or other polishing material and their efficiency is reduced. The principal object of the invention is to provide a simple, convenient arrangement whereby the polishing blocks may be. removed for the purpose of cleaning the felts or renewing them withoutraising the runner frame, and to accomplish this result with a minimum expenditure of time and effort. Certain embodiments of the invention are illustrated in the accompanying drawings wherein:

Figure 1 is a side elevation of the complete apparatus. Fig. 2 is a partial plan view of the runner frame construction at the edge thereof. Fig. 3 is a section on the line III-ill of Fig. 2. Fig. 4- is a view similar to that of Fig. 2 illustrating a modification. Fig. 5 is a section on the line VV of Fig.

4. Fig. 6 is a sectional view illustrating another modification. And Fig. 4 is a section on an enlarged scale on the line VII-VII of Fig. 6.

Referring to the eneral arrangement of parts as shown in big. 1. the reference numeral 1 designates the l'rauu nvork of the machine: 2 is a supporting b'racket carried by the. framework; 3 is a car mounted upon the track 1 and carrying the. glass to be polished: o is a rack carried upon the bottom of the cars and driven from the shaft (5 through the gears T and S; 9 is a tubular support provided at its upper and lower ends with hearings in which is journaled the runner shaft 10; 11 is. an electric. motor which drives the shaft 10 through the inter- 1923. Serial No. 643,540.

mediary of gearing located in the casing 12; 13 is the runner frame secured to the lower end of the runner shaft and carrying the blocks or runners 1d; 15 is a lever provided with a hooked end as indicated at 16 and engaging trunnions 17 carried by the gear casing 12; 18 is a link pivoted to the bracket 2 and provided with hook shaped ends 19 engaging trunnions 20 carried by the tubu lar support 9; 21 is a rod connected to the lever 15 for raising and lowering the runner, such rod being threaded as indicated at :32 and passing through the bracket 23; and 21 is a hand wheel threaded onto the rod whereby it may be raised and lowered.

The polishing block 14 is provided with the usual felt 25 and spindle 26 projecting up through the bearing member 27 carried by the runner frame 13. The bearing member is provided with a shank 28 projecting into the frame member 13 as indicated in Fig. 3 and provided with an angular recess 29. A set screw set at an inclined position as indicated in Fig. 3 engages the wall of the recess 29 and serves to maintain the hearing member 27 securely in position. Vhen it is desired to remove the runners for cleaning or repair, the runner which is to be removed is brought next to the side of the car as indicated in Fig. 3 and the set screw 30 is loosened, permitting withdrawal of the bearing member 27 and the runner carried thereby. The runner may be cleaned by means of washing and scraping and then replaced, or a spare runner may be substituted. The other runners may be removed and handled in the same manner. It will be noted thatthe runners may be removed and replaced without lifting the runner frame 13, although. if desired, such runner frame might be lifted so as to make all of the runners clear the. glass, the cotter pins 31 being engaged by the tops of the bearing members at. such time, after which the procedure of removing and handling the runners is the. same. as heretofore described. Figs. 4 and 5 illustrate a modification which permits the same general method of procedure. In this construction the runner frame 13 is provided with sockets 32 receiv-' ing the bearings 33, which in turn receive the spindles 26 of the runners 1 1. The bearings are held against vertical movement by means of the set screws 34. The sockets 32 are provided with laterally extending openings 0r slots of a width just sufficient to permit the passage t-herethrough laterally of the spindles 26. When it is desired to remove one of the runners, the set screw 34 is screwed back to release the bearings 33, and such bearing is moved vertically until it clears the top of the frame 13, after which the runner can be removed laterally, the spindle 26 passing through the slot 35. As in the other construction, the spindle is provided with a cotter pin 31.

Figs. 6 and 7 illustrate another method of securing the lateral removal of the runners without moving the runner frame vertically so as to clear the runner spindle and without removing the cotter pin at the upper end of such spindle. In this construction. the runner 14: is provided with a perforated lu 35 which fits inside of a hollow spindle 30, such spindle passing up through the run-- ner frame 13 and being provided with a cotter pin 31 as in the other type of construction. The lug 35 is secured to the spindle 36 by means of a bolt 37 provided with a cotter 38. lVhen it is desired to remove the runner, the bolt 3? is removed and the spindle 3G raised, which frees the lug 35. so that the runner can be removed laterally for replacen'ient or cleaning.

\Yhat I claim is:

1. In apparatus for polishing plate glass, a rotatable runner frame, a carrier for the glass mounted for movement beneath said frame, and a plurality of polishing blocks or runners releasably mounted on the frame for free rotation about their vertical axes, and removable laterally from said frame without lifting said frame from operative position.

2. In apparatus for polishing plate glass, a rotatable runner frame, a carrier for the glass mounted for movement beneath said frame, and a plurality of polishing blocks having vertical spindles extending upward through said frame, and securing means whereby the blocks may be removed horizontally from the frane when it is in operative position upon lcicasing said securing 111021118- 3. In apparatus for polishin; plate class, a rotatable runner frame. having a plurality of vertical sockets opening laterally, bearings seated in said sm-kets. means for rotating said frame, a carrier for the glass mounted for movement b'eneath said frame, and a plurality of polishin; blocks or runners havingvertical spindles extending up ward through said bearings. the said spindles being of such diameter that they may be removed through the lateral openings from the sockets after the bearings are rcmoved from said sockets.

in testimony whereof, 1 have hereunto subscribed my name this 26th day of May, 19:23.

\VILLIAM ()lYlCN. 

